Carlo's Action Facepack 2018
2017-18 megapack of players & staff in top quality action style. Regular updates. Last re-up: 4 November @ 9,500 tiles.

How to add Action Facepack 2018 to FM18
Download the .zip archive and use a tool such as 7-zip for Windows or The Unarchiver for MacOSX to extract its contents.

Move the extracted folder to:
Regular FM:
\Documents\Sports Interactive\Football Manager 2018\graphics\faces\
FM Touch:
\Documents\Sports Interactive\Football Manager Touch 2018\graphics\faces\
Create the folders "graphics" and "faces" if they don't exist.

Open Football Manager 2018 (or Touch) and go to Preferences > Interface.
Click the "Clear Cache" button. Return to the same screen.
Enable "Reload skin when confirming changes in Preferences".
Click the "Reload Skin" button.
There should be a box that pops up saying 'loading image data for the new skin'. Once this is done action facepack should be working within the game.